## GnomeVFSVolumeMonitor GnomeVFSVolumeMonitor — Monitors volume mounts and unmounts |

## Synopsis

    #define             GNOME_IS_VFS_VOLUME_MONITOR         (o)
    #define             GNOME_IS_VFS_VOLUME_MONITOR_CLASS   (k)
    #define             GNOME_VFS_TYPE_VOLUME_MONITOR
    #define             GNOME_VFS_VOLUME_MONITOR            (o)
    #define             GNOME_VFS_VOLUME_MONITOR_CLASS      (k)
                        GnomeVFSVolumeMonitor;
                        GnomeVFSVolumeMonitorClass;
    GnomeVFSVolumeMonitor* gnome_vfs_get_volume_monitor     (void);
    GList*              gnome_vfs_volume_monitor_get_connected_drives
                                                            (GnomeVFSVolumeMonitor *volume_monitor);
    GnomeVFSDrive*      gnome_vfs_volume_monitor_get_drive_by_id
                                                            (GnomeVFSVolumeMonitor *volume_monitor,
                                                             gulong id);
    GList*              gnome_vfs_volume_monitor_get_mounted_volumes
                                                            (GnomeVFSVolumeMonitor *volume_monitor);
    GType               gnome_vfs_volume_monitor_get_type   (void);
    GnomeVFSVolume*     gnome_vfs_volume_monitor_get_volume_by_id
                                                            (GnomeVFSVolumeMonitor *volume_monitor,
                                                             gulong id);
    GnomeVFSVolume*     gnome_vfs_volume_monitor_get_volume_for_path
                                                            (GnomeVFSVolumeMonitor *volume_monitor,
                                                             const char *path);
    GnomeVFSVolumeMonitor* gnome_vfs_volume_monitor_ref     (GnomeVFSVolumeMonitor *volume_monitor);
    void                gnome_vfs_volume_monitor_unref      (GnomeVFSVolumeMonitor *volume_monitor);

## Object Hierarchy

      GObject
       +----GnomeVFSVolumeMonitor

## Signals

      "drive-connected"                                : Run First
      "drive-disconnected"                             : Run First
      "volume-mounted"                                 : Run First
      "volume-pre-unmount"                             : Run First
      "volume-unmounted"                               : Run First

## Description

## Details

### GNOME_IS_VFS_VOLUME_MONITOR()

    #define GNOME_IS_VFS_VOLUME_MONITOR(o)       (G_TYPE_CHECK_INSTANCE_TYPE ((o), GNOME_VFS_TYPE_VOLUME_MONITOR))

`o` : |

### GNOME_IS_VFS_VOLUME_MONITOR_CLASS()

    #define GNOME_IS_VFS_VOLUME_MONITOR_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), GNOME_VFS_TYPE_VOLUME_MONITOR))

`k` : |

### GNOME_VFS_TYPE_VOLUME_MONITOR

    #define GNOME_VFS_TYPE_VOLUME_MONITOR        (gnome_vfs_volume_monitor_get_type ())

### GNOME_VFS_VOLUME_MONITOR()

    #define GNOME_VFS_VOLUME_MONITOR(o)          (G_TYPE_CHECK_INSTANCE_CAST ((o), GNOME_VFS_TYPE_VOLUME_MONITOR, GnomeVFSVolumeMonitor))

`o` : |

### GNOME_VFS_VOLUME_MONITOR_CLASS()

    #define GNOME_VFS_VOLUME_MONITOR_CLASS(k)    (G_TYPE_CHECK_CLASS_CAST((k), GNOME_VFS_TYPE_VOLUME_MONITOR, GnomeVFSVolumeMonitorClass))

`k` : |

### GnomeVFSVolumeMonitor

    typedef struct _GnomeVFSVolumeMonitor GnomeVFSVolumeMonitor;

### GnomeVFSVolumeMonitorClass

    typedef struct {
    	GObjectClass parent_class;

    	/* signals */
    	void (* volume_mounted)	  	(GnomeVFSVolumeMonitor *volume_monitor,
    				   	 GnomeVFSVolume	       *volume);
    	void (* volume_pre_unmount)	(GnomeVFSVolumeMonitor *volume_monitor,
    				   	 GnomeVFSVolume	       *volume);
    	void (* volume_unmounted)	(GnomeVFSVolumeMonitor *volume_monitor,
    				   	 GnomeVFSVolume	       *volume);
    	void (* drive_connected) 	(GnomeVFSVolumeMonitor *volume_monitor,
    				   	 GnomeVFSDrive	       *drive);
    	void (* drive_disconnected)	(GnomeVFSVolumeMonitor *volume_monitor,
    				   	 GnomeVFSDrive         *drive);
    } GnomeVFSVolumeMonitorClass;

### gnome_vfs_get_volume_monitor ()

    GnomeVFSVolumeMonitor* gnome_vfs_get_volume_monitor     (void);

Returns a pointer to the GnomeVFSVolumeMonitor singleton. GnomeVFSVolumeMonitor is a singleton, this means it is guaranteed to exist and be valid until `gnome_vfs_shutdown()` is called. Consequently, it doesn't need to be refcounted since gnome-vfs will hold a reference to it until it is shut down.

Returns : | a pointer to the GnomeVFSVolumeMonitor singleton.

Since 2.6

### gnome_vfs_volume_monitor_get_connected_drives ()

    GList*              gnome_vfs_volume_monitor_get_connected_drives
                                                            (GnomeVFSVolumeMonitor *volume_monitor);

Returns a GList of all drives connected to the machine. The GnomeVFSDrive objects must be unreffed by the caller when no longer needed with `gnome_vfs_drive_unref()` and the GList must be freed.

`volume_monitor` : | a GnomeVFSVolumeMonitor.
Returns : | a GList of all connected drives.

Since 2.6

### gnome_vfs_volume_monitor_get_drive_by_id ()

    GnomeVFSDrive*      gnome_vfs_volume_monitor_get_drive_by_id
                                                            (GnomeVFSVolumeMonitor *volume_monitor,
                                                             gulong id);

Looks for a GnomeVFSDrive whose id is `id`. A valid `volume_monitor` to pass to this function can be acquired using `gnome_vfs_get_volume_monitor()`

`volume_monitor` : | a GnomeVFSVolumeMonitor.
`id` : | the GnomeVFSVolume id to look for.
Returns : | the GnomeVFSDrive corresponding to `id`, or `NULL` if no GnomeVFSDrive with a matching id could be found. The caller owns a reference on the returned drive, and must call `gnome_vfs_drive_unref()` when it no longer needs it.

Since 2.6

### gnome_vfs_volume_monitor_get_mounted_volumes ()

    GList*              gnome_vfs_volume_monitor_get_mounted_volumes
                                                            (GnomeVFSVolumeMonitor *volume_monitor);

Gets the list of all the mounted GnomeVFSVolume volumes.

`volume_monitor` : | a GnomeVFSVolumeMonitor.
Returns : | GList of GnomeVFSVolume. The GnomeVFSVolume objects must be unreffed by the caller when no longer needed with `gnome_vfs_volume_unref()` and the GList must be freed.

Since 2.6

### gnome_vfs_volume_monitor_get_type ()

    GType               gnome_vfs_volume_monitor_get_type   (void);

Returns : |

### gnome_vfs_volume_monitor_get_volume_by_id ()

    GnomeVFSVolume*     gnome_vfs_volume_monitor_get_volume_by_id
                                                            (GnomeVFSVolumeMonitor *volume_monitor,
                                                             gulong id);

Looks for a GnomeVFSVolume whose id is `id`. A valid `volume_monitor` to pass to this function can be acquired using `gnome_vfs_get_volume_monitor()`.

`volume_monitor` : | a GnomeVFSVolumeMonitor.
`id` : | GnomeVFSVolume id to look for.
Returns : | the GnomeVFSVolume corresponding to `id`, or `NULL` if no GnomeVFSVolume with a matching id could be found. The caller owns a reference on the returned volume, and must call `gnome_vfs_volume_unref()` when it no longer needs it.

Since 2.6

### gnome_vfs_volume_monitor_get_volume_for_path ()

    GnomeVFSVolume*     gnome_vfs_volume_monitor_get_volume_for_path
                                                            (GnomeVFSVolumeMonitor *volume_monitor,
                                                             const char *path);

Returns the GnomeVFSVolume corresponding to `path`, or `NULL`.

The volume referring to `path` is found by calling `stat` on `path`, and then iterating through the list of volumes that refer to currently mounted local file systems. The first volume in this list maching the `path`'s UNIX device is returned.

If the `stat` on `path` was not successful, or no volume matches `path`, or `NULL` is returned.

`volume_monitor` : | a GnomeVFSVolumeMonitor.
`path` : | string representing a path.
Returns : | the GnomeVFSVolume corresponding to the `path`, or `NULL`. Volume returned must be unreffed by the caller with `gnome_vfs_volume_unref()`.

Since 2.6

### gnome_vfs_volume_monitor_ref ()

    GnomeVFSVolumeMonitor* gnome_vfs_volume_monitor_ref     (GnomeVFSVolumeMonitor *volume_monitor);

Increases the refcount of `volume_monitor` by one, if it is not `NULL`.

You shouldn't use this function unless you know what you are doing: GnomeVFSVolumeMonitor is to be used as a singleton object, see `gnome_vfs_get_volume_monitor()` for more details.

`volume_monitor` : | the GnomeVFSVolumeMonitor, or `NULL`.
Returns : | `volume_monitor` with its refcount increased by one, or `NULL` if `volume_monitor` is `NULL`.

Since 2.6

### gnome_vfs_volume_monitor_unref ()

    void                gnome_vfs_volume_monitor_unref      (GnomeVFSVolumeMonitor *volume_monitor);

Decreases the refcount of `volume_monitor` by one, if it is not `NULL`.

You shouldn't use this function unless you know what you are doing: GnomeVFSVolumeMonitor is to be used as a singleton object, see `gnome_vfs_get_volume_monitor()` for more details.

`volume_monitor` : | GnomeVFSVolumeMonitor, or `NULL`.

Since 2.6

## Signal Details

### The "drive-connected" signal

    void                user_function                      (GnomeVFSVolumeMonitor *volume_monitor,
                                                            GnomeVFSDrive         *drive,
                                                            gpointer               user_data)           : Run First

This signal is emitted when the GnomeVFSDrive `drive` has been connected.

When the `drive` is connected, it is present in the `volume_monitor`'s list of connected drives, which can be queried using `gnome_vfs_volume_monitor_get_connected_drives()`.

`volume_monitor` : | the GnomeVFSVolumeMonitor which received the signal.
`drive` : | the GnomeVFSDrive that has been connected.
`user_data` : | user data set when the signal handler was connected.

### The "drive-disconnected" signal

    void                user_function                      (GnomeVFSVolumeMonitor *volume_monitor,
                                                            GnomeVFSDrive         *drive,
                                                            gpointer               user_data)           : Run First

This signal is emitted after the GnomeVFSDrive `drive` has been disconnected.

When the `drive` is disconnected, it is removed from the `volume_monitor`'s list of connected drives, which can be queried using `gnome_vfs_volume_monitor_get_connected_drives()`.

`volume_monitor` : | the GnomeVFSVolumeMonitor which received the signal.
`drive` : | the GnomeVFSDrive that has been disconnected.
`user_data` : | user data set when the signal handler was connected.

### The "volume-mounted" signal

    void                user_function                      (GnomeVFSVolumeMonitor *volume_monitor,
                                                            GnomeVFSVolume        *volume,
                                                            gpointer               user_data)           : Run First

This signal is emitted after the GnomeVFSVolume `volume` has been mounted.

When the `volume` is mounted, it is present in the `volume_monitor`'s list of mounted volumes, which can be queried using `gnome_vfs_volume_monitor_get_mounted_volumes()`.

If the `volume` has an associated GnomeVFSDrive, it also appears in the drive's list of mounted volumes, which can be queried using `gnome_vfs_drive_get_mounted_volumes()`.

`volume_monitor` : | the GnomeVFSVolumeMonitor which received the signal.
`volume` : | the GnomeVFSVolume that has been mounted.
`user_data` : | user data set when the signal handler was connected.

### The "volume-pre-unmount" signal

    void                user_function                      (GnomeVFSVolumeMonitor *volume_monitor,
                                                            GnomeVFSVolume        *volume,
                                                            gpointer               user_data)           : Run First

This signal is emitted when the GnomeVFSVolume `volume` is about to be unmounted.

When the `volume` is unmounted, it is removed from the `volume_monitor`'s list of mounted volumes, which can be queried using `gnome_vfs_volume_monitor_get_mounted_volumes()`.

If the `volume` has an associated GnomeVFSDrive, it is also removed from in the drive's list of mounted volumes, which can be queried using `gnome_vfs_drive_get_mounted_volumes()`.

When a client application receives this signal, it must free all resources associated with the `volume`, for instance cancel all pending file operations on the `volume`, and cancel all pending file monitors using `gnome_vfs_monitor_cancel()`.

`volume_monitor` : | the GnomeVFSVolumeMonitor which received the signal.
`volume` : | the GnomeVFSVolume that is about to be unmounted.
`user_data` : | user data set when the signal handler was connected.

### The "volume-unmounted" signal

    void                user_function                      (GnomeVFSVolumeMonitor *volume_monitor,
                                                            GnomeVFSVolume        *volume,
                                                            gpointer               user_data)           : Run First

This signal is emitted after the GnomeVFSVolume `volume` has been unmounted.

When the `volume` is unmounted, it is removed from the `volume_monitor`'s list of mounted volumes, which can be queried using `gnome_vfs_volume_monitor_get_mounted_volumes()`.

If the `volume` has an associated GnomeVFSDrive, it is also removed from in the drive's list of mounted volumes, which can be queried using `gnome_vfs_drive_get_mounted_volumes()`.

`volume_monitor` : | the GnomeVFSVolumeMonitor which received the signal.
`volume` : | the GnomeVFSVolume that has been unmounted.
`user_data` : | user data set when the signal handler was connected.